Subjects included patients with pancreatic cancer, at least 18 years of age, who were recruited from outpatient clinics and inpatient units at Dana-Farber Cancer Institute and Brigham and Women's Hospital.Bulk and single-cell transcriptomic profiling of human pancreatic cancer patient samples (direct from tumor or profiling of patient-derived organoids) was performed. Patient-derived pancreatic cancer organoids were profiled in the presence or absence of interferon-gamma stimulation. Healthy-donor CD8 T lymphocytes were ex vivo primed and expanded with candidate non-canonical (cryptic) peptide antigens. Single-cell transcriptomic profiling with paired T cell receptor (TCR) sequencing and molecularly-barcoded HLA tetramers enabled deconvolution and identification of cryptic antigen-reactive TCRs.

Cancer-Restricted Cryptic Antigens Are Targets for T Cell Recognition

Carcinoma, Pancreatic Ductal study with OTHER, RNA-Seq data on dbGaP (17 participants)